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micro ch4 .
micro ch4
| Question | Answer |
|---|---|
| actin | long filaments of protein arranged like ribbons under the cell membrane of some bacteria,contribute to cell shape. |
| amphitichous | having a single flagellum or a tuft of flagella at opposite poles of a microbial cell. |
| appendages | accessory structures that sprout from the surface of bacteria. they can bedived into two major groups, those that provide motility and those that enable adhesion. |
| bacteria | when capitalized can refer to onew of the three domains of living organisms proposed by woese, containing all nonarchea prokaryotes. |
| biofilm | a complex association that arises from a mixture of microorganisms growing together on the surface of a habitat. |
| chemotaxis | the tendency of organisms to move in response to a chemical gradient toward an attactant or to avoid adverse stimuli. |
| coccobacillus | an elongated coccus, a short, thick, oval shaped bacterial rod. |
| endospore | a small, dormant, resistant derivateve of a bacterial cell that geminates under favorable growth conditions into a vegetive cell. thebacterialgenera bacillus and clostridium are typical sporeformers. |
| filament | a helical structure composed of proteins that is part of bacterial flagella. |
| flagellum | a structure that is used to propel organism through a fluid environment. |
| gram stain | a differential stain for bacteria useful in identification and taonomy. gram postive organisms appear purple |
| lophotrichous | describing bacteria having a tuft of flagella at one or both poles. |
| monotrichous | describing a microorganism that bears a single flagellum |
| motility | self propulsion. |
| pili | small, stiff filamentous appendages in gram negative bacteria that functions in dna exchange during bacterial conjugation. |
| pilus | a hollow appendage used to bring two bacterial cells together to transfer dna |
| spirochete | a coiled, spiral shaped bacterium that has endoflagella and flexes as it moves. |
| sporagium | a fungal cell in which asexual spores are formed by multiple cell cleavage. |